COOL COLD Portable Laptop Notebook Low Noise USB Air Extracting Cooler Cooling Fan Radiator LCD Display Speed Adjustable with Rotatable Knob Accessory Type: Cooler Color: Gold Maximum support size: Support up to 15-inch Laptop Dimension: 12.4 * 8.2 * 4cm / 4.88 * 3.22 * 1.57in (L * W * H) Fan Numbers: 1 Fan Size: 100mm Fan Specifications: Maximum air volume: 23.15CFM Fan speed: 1300-3500±10%RPM Function: cooling